First try the following operations: remove the battery and power adapter, press and hold the switch button for 30 seconds to discharge static electricity, wait for about 15 minutes, and then connect the power adapter separately to power on; If you can't boot, there are several reasons.

The first reason: the startup circuit of the notebook motherboard is faulty, such as clock, reset, power supply, MOS tube, etc. , which may lead to failure to start, black screen, I/O problems, failure to start the computer, black screen and so on. Solution: Send it after sale or go to a repair shop to repair the motherboard.

The second reason: the memory and graphics card of the notebook are oxidized, which leads to poor contact between the memory slot and the graphics card slot, resulting in unsuccessful startup and black screen. How to deal with:

Solution: Unplug the power supply, open the back cover of the notebook and take out the card slot of the memory. If it is not a discrete graphics card welded on the motherboard, take out the card slot, aim at the memory and the gold finger of the graphics card (where there are copper sheets), wipe it back and forth with an eraser, blow off the dust, and then plug it back in. After the back cover is covered, the boot is generally ok.

The third reason: there is virtual soldering in the memory of the notebook graphics card, the performance of the main chip decreases, the BIOS of the graphics card is disordered, and there is something wrong with the control power IC, which will lead to the graphics card not working normally, that is, the graphics card is broken, naturally it cannot be turned on, and the screen is black. Solution: Jane, repair the video card or replace it.

Daily maintenance of computer software and hardware;

Just like we have to clean the table at home every day, the computer needs you to be gentle with it every day and form a habit:

Habit 1: Keep the computer room dry and clean, especially the computer workbench should be dusted every day (or two or three days, depending on the cleanliness of the room). You know, the monitor is a powerful "vacuum cleaner". The author once encountered an accident that the circuit board was short-circuited and the display was damaged because of the bad environment, thick dust inside the display and tidal turnover.

Habit 2: Turn on the machine correctly (peripheral first, then host) and turn it off. In fact, this should not be regarded as the content of "maintenance". However, many users always disagree with this, and even mistakenly think that the computer has a soft shutdown now, which is also a "cliche." But this is absolutely necessary: if the order of "peripheral first, host second" is reversed, it may make the system unable to identify related hardware or load device drivers.

Habit 3: Before using unsafe floppy disks or CDs, be sure to check whether there are drugs; Check the virus again after installation or use, because some antivirus software can't compress the virus in the file.

Habit 4: After the system exits abnormally or loses power unexpectedly, you should scan the hard disk as soon as possible and fix the errors in time. Because of this, some cluster links of the hard disk will be lost, which will cause potential danger to the system. If it is not repaired in time, it will lead to some program disorder and even endanger the stable operation of the system.